Cartoning machine



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United Smtes Patent 2,999,344 CARTONING MACHINE Richard D. 'Clanin and Omar Hansen, Jr., Anderson, Ind., assignors to Lynch Corporation, Anderson, Ind., a corporation of Indiana Filed Aug. 3, 1959, Ser. No. 831,297

21 Claims. (Cl. 53-186) This invention relates to a cartoning machine and particularly one which is adapted to hold a carton in such position that product, such as a pound of sliced bacon, can be inserted therein, whereupon the machine closes the carton and seals it.

One object of the invention is to provide a cartoning machine in which a stack of collapsed cartons are erected and fed to a conveyor by vacuum cup pickup means engaging the bottomrnost carton of the stack and transferring it to a conveyor, the conveyor having means designed to both receive the carton in erected position and hold it in a bowed-open position to facilitate the entry of the product into the carton.

Another object is to provide the conveyor with dogs biased to engage side panels of the carton in such man-. ner as to bow the top panel of the carton upwardly, thus opening the carton to such position that there is suflicient space for ready insertion of the product.

Still anotherjobject is to provide tuckers for partially closing one end of the carton before it comes to a loading station, and means to back up the partially closed end of the carton which serves as a stop for the product as it is inserted manually into the carton, with assurance that the partially closed end of the carton will not be disturbed.

A further object is to provide means for thereafter dewaxing and applying glue to certain portions of the carton, and then completely close the carton around the product.

Still a further object is to provide means to thereafter heat the glued portions of the carton for aiding in the setting of the glue on the carton to completely seal the product therein.

An additional object is to provide chill blocks between which the carton thereafter passes for chilling the glued and heated ends of the carton so as to condition the car-- ten for immediate delivery from the machine, whereby the entire operation of loading and sealing the carton may be accomplished in a of time and the machine thereby has great capacity in a relatively small s ace.

With these and other objects in view, our invention consists in the construction, arrangement and combination of the various parts of our cartoning machine, whereby the objects above contemplated are attained, as hereinafter more fully set forth, pointed out in our claims and illustrated in detail on the accompanying drawings, wherein:

FIG. 1 is a perspective view of a cartoning machine embodying our invention;

FIG. 2 is a perspective view of a carton used therein and shows the carton opened from a collapsed position;

FIG. 3 is a layout of the carton blank;

FIGS. 4a through 4n, inclusive, are diagrammatic views showing the successive operations performed by our cartoning machine;

FIG. 5 is an enlarged plan view of the cartoning machine showing the -front or infeed end, about one-third of the machine being shown;

FIG. 6 is a continuation of the right-hand end of FIG. 5;

FIG. 7 is a continuation of FIG. 6 and shows the rear or discharge end of the machine;

,FIGS'. 8, 9 and 10 are a side elevation in three sections Patented Sept. 12, 1961 2 corresponding respectively to the plan view shown in FIGS. 5, 6 and 7;

FIG. 11 is a front end elevation of portions of the machine with certain safety guards removed to show the operating mechanism;

FIG. 12 is an enlarged detail sectional view on the line 12-12 of FIG. 11;

FIG. 13 is a fragmentary perspective view of that portion of the machine shown in FIG. 11 within the dotand-d-ash circle 13 thereof;

FIG. 14 is a vertical sectional view on the line 1.4-14 of FIG. 10;

FIG. 14a is a detail on the line 14a-14a of FIG. 14;

FIG. 15 is a vertical sectional view on the-line 15-15 of FIG. 9;

FIG. 16 is an enlarged vertical sectional view on the line 16-16 of FIG. 6 showing a mechanism for scraping ofi excess wax from certain flaps of the carton;

FIG. 17 is an enlarged side elevation of a conveyor chain with dogs thereon holding a carton in bowed-open position;

FIG. 18 is a plan view of the chain shown in FIG. 17;

FIG. 19 is an enlarged vertical sectional view on the line 19-19 of FIG. 10 showing a pair of hold-down rollers and individual adjusting means therefor;

FIG. 20 is a vertical sectional view on the line 20-20 of FIG. 19;

FIG. 21 is an enlarged plan view of aheater plate assembly shown in the side elevation of FIGS. 9 and 10 and thermostat therefor;

FIG. 22, is a vertical sectional view of the heater plate assembly shown in FIG. 21, and is taken on the line 22-22 thereof;

FIG. 23 is an enlarged vertical sectional view through the thermostat shown in FIG. 21 and is taken on the line 23-23 thereof;

FIG. 24 is a perspective view of a portion of the machine where the carton is held in bowed-open position by the dogs of the conveyor chain to facilitate loading the product therein;

FIG. 25 is an enlarged vertical sectional view on the line 25-25 of FIG. 9 to show a panel gluing mechanism; and

FIG. 26 is a plan view of one of the gluing rollers and viewed in the direction of the arrow 26 adjacent FIG. 25.

On the accompanying drawings we have used the reference numerals 30 and 32 to indicate bent and rear supporting legs for our cartonin-g machine which legs are rigidly connected together by a frame tube 34 welded to the legs. Threepair of uprights 36 (FIGS. 8, 9 and 10) are welded to the top of the frame tube 34 and to a right side longitudinal frame channel 38 so that the elements 30, 32, 3'4, 36 and 38 form a framework for our cartom'ng machine. Each pair of uprights 36 has secured thereto at the upper ends thereof a tube 40, shown in section in FIG. 15, that supports the right side frame channel 38 (shown at the left-hand side in FIG. 15 because the section is taken looking toward the inieed end of the machine). A rod 42 telescopes into the tube 40 and supports a right side frame channel 39 so that the distance between the channels 38 and 39 may be adjusted to accommodate difierent lengths of cartons, as will hereinafter appear.

At the front or infeed end of the machine (left-hand end in FIG. 1) is a magazine M for collapsed cartons C. One of the cartons is shown in FIG. 2 in erected position. The blank for the carton is shown in FIG. 3, consisting of a bottom panel 44, a front side panel 46, a rear side panel 48, a top panel 50 having a transparent window 51, and flap 49. The cartons C are placed in 3 the magazine M in collapsed condition with the flap 49 glued to one marginal edge of the top panel 50 as shown in FIG. 2, wherein the car-ton has been slightly expanded to form a rectangular tube of the elements 44, 4,6, 48 and 50. The blank for the carton further includes dust tabs 52, 53, 56 and 58, bottom end panels 54 and 60, and top end panels 62 and 64.

The magazine M comprises six uprights 6 6 and two uprights 67 to hold the cartons C in a vertical stack, as illustrated in FIG. 1, and permit feeding of .the eartons one at a time fromthe bottom of the stack. The uprights 66 are suitably supported rigidly .on the frame of the car-toning machine, and at 9; lower ends they are provided with stop screws 68 as shown in FIG. 12 having rounded projections 70 supporting the edges oi the cartons C as illustrated. It will be obvious, however, that if the bottommost carton isbowed downwardly, as show-ndotted, it may be withdrawn from supported po sition on the projections 70, as will hereinafter appear.

The two bars 67 are provided at their lower ends with strippers 72 to engage the edges of the top end panels 62 and 64, the bottom end panels 54- and 60 being notched at 55 and 61, respectively, to clear these strippers for a purpose which will hereinafter appearf As shown in FIG. 13, the strippers may be adjusted by means of a clamp screw 74 through a slot 76 of each stripper.

At the front or infeed end of the machine (FIGS. 5 and 8) we provide four conveyor chain sprockets and at the rear or discharge end of the machine we provide a similar plurality of conveyor chain sprockets 0 (FIGS. 7 and 10). Around the sprockets 78 and 80 are twosets of conveyor chains, outerchains 82 and inner chains 34. As shown in FIG. 18, the outer chains are provided with lugs 86 while the inner chains are provided with lugs 36a for supporting pivoted dogs 83 and 88 i. respectively.

the dogs 88 and' 88a are biased by springs 90 to the positions shown in FIG. 17 with the lower ends ot the dogs stopped against the upper surfaces of the links 86 and'86a. The aogsssandssa may be spra g apart from each other a few degrees to permit entranceof the car-ton C will be a e hrr r on h t e d scr pti n o our cartoriing machine. i i i For driving the conveyor chains 82 84 we provide a m o 91 e IG 1) P v de w h h s t hls clutc 9.4 connectingt he motor operatively to a drive shaft 96.

A drive chain 98 connects the shaft 96 to a shaft e chain being hhh l h u ed n a who E IQ. 19'

's shhwn in F G J e h s s h h! i s' c awed in the remaining figures. As shown in FIG. 5, a bevel e 02 is o nt h m4. and a ha e! sea Hish h r w h he la ter as h h (hi i leashedi shaft 0 sown in G t .0 i l s v -v FIGS- 7 will) a h a 'p hi h o th longit d na shaft 108 withwhich bevel gear 112 meshes, the bevel a 112 e n m ted 9 h on e or shaft 14 h vhihh the o r shsih r s ssts are moaned s hm r su rt n ba .1 (see FIGS-- 5 ahd 8 m t lef a d) r o ided. ea whi pe w th Pa O um 1 12 ,13, o e age he ow rmo a o Q3119 ss -a t th Sam ho t ma az ne h a uum r be n c hhs t t o a hos .3 0 to a vacuum we e d iv n b an elect c motor 1 he bars 116 are mounted on a supporting arm (see ri ete iir ove par l l gram. lie-1s 128 and 130 (see FIG. 8 which in turn are pivoted at 13. t0 the ame he mac ne- Th 128. a d.

130 are oscillated through arcs, indicated at re in FIG.

.12;. a 95 1. .6. (a or dw ll a d 4 iid' a l)" n in a roller 1 8. o t e 13 1 t e o l rhsi a he d.

n e a m with. the n y a prin 149 shhh s to th e link 128 anchored at 142. W

' Intrp'osed in the vacuumhose 1'20 is vacuum valve .4' u i h s use w pe hsh s i a *Piv ts 1%? 146 being provided to close it by depression of'the lever as mas position shaman FIG. 8 by an adjustable proaseaess 7 1 jection 148 on the supporting arm 126. The vacuum valve 144 is open during the major portion of the oscillation of the links 128 and 130 from their lowermost dwell position.

Proceeding toward the discharge end of the machine, a product shelf 150 is illustrated for the convenience of the Operator in supporting Product that is inserted by hand into the cartons, one Jot which is shown at C in FIG. 1. As shown in FIG. 4 our cartoning machine includes a dust tab tucker 152 (FIG. 5) forlthe dust tabs 52 and 53, a dust tab tucker 156 (FIG. 6) for the dust tabs 56 and 58, bottom end panel tuckers 154- and 160 for the bottom end panels 54 and 60 respectively, and top end panel tuckers l62 and 164'for the'top end panels 62 and -64 respectively. The dust tab tucker -152'is shown in FIG. 5. The tucker 152 is movable, being slidable on a guide rod 166, and slid thereon by a lever 1.68 (see FIGS. .8 and 24) pivoted at and carrying a roller 172.

with which a earn 174 coacts. A spring 176 is provided to keep the roller in cont-act with the cam 174. The cam is secured to the shaft 104.

The bottom end panel tucker 154 is a plow or twisted blade beginning in the horizontal position shown in FIG.-

-4-( e) and twisting upwardly to avertical position (also see FIG. 5).

FIGS. 8, 9 and 10 also include thereadjacent the designations (a) to (n) at the various positions along the machine where the operations depicted in FIG. 4 occur. Opposing the tuckers 152 and 154 is a stop rail 158 also shown in FIG. 5, and in FIG. 4(d). and (e). A stop plate 155 shown in FIG. 4( to (i) forms a continnation of the bottom end panel tucker 154.

The dust tab tucker 156 (see FIGS. 4(h), 6 and 9) is slidable on a stationary rod 178 and is slid therealong by a lever 180 pivoted at 182 and having a roller 184 journalled thereon. The roller 184 is adapted to engage a earn 186 by a spring 188, the cam being in the term of a spiral rod as also shown in FIG. 15.

The bottom end panel tucker 160 is also in the form of alplow starting in the horizontal position shown in 4(1) and twisting upwardly to the vertical position (see a so G- Hold-down belts 190 (see FIGS. 40') to (n) and FIG. 14) are provided for engaging the tops of the cartons until they are sealed, the cartons riding supporting belts the sprocket 202 is mounted on an arm 203 rotatable about the of the sprockets 194 and 198, and is urged by a spring 207 (FIG. 7) in the proper direction to auto: ma icall t ke u l qki e chain 6.-

Supporting rods 205 for the central portion of the carton also extend throughout the major portion of the machine as shown in FIGS. 40) to (m), 5, 6 and 7.

The vertical adjustment of the hold-down belts 19.0 is efiected by mounting the pulleys 192 and 19.4, and castings 193 and hold-down roller supporting bars 226 that carry them for vertical sliding on posts 210 shown in FIGS. 6 and 9., and posts 212 shown in FIGS. 7, l0 and 14. i The castings 193 and the bars 226 are supported by chains 214 secured to rollers 216 mounted on rock shafts 218. Rock shaft levers 220 (FIGS. 6 and 9) are provided to rock the shafts 218 and thereby raise or lower the pulleys 192 and 194 as desired while clamp screws 222' are loose. After the desired adjustment the screws can be tightened by rotating knobs 224 oi the screws.

The hold-down roller supporting bars 226 have pivoted thereto at 228, arms 230 on which hold-down rollers 232 are journalled. These rollers, as shown in FIGS. 19 and 20, engage the lower stretches of the hold-down belts 190. The arms and thereby the rollers are spring biased downwardly by means of springs 234, and the hold-down effect of each roller may be individually adjusted by means of adjusting screws 236.

Angle shaped de-waxer plates 238 shown in FIGS. 4(i), 6, 9 and 16 are heated by electric heaters 240. The upper surfaces of the plates 238 are scarfed as shown by the diagonal lining in FIG. 6. A dater roller 242 overlies the right side de-waxer plate and is driven by a chain 243.

Referring to FIGS. 4(k), 25 and 26, glue applying rolls 244 are provided for the top end panels 62 and 64 of the carton C. These rolls are mounted on shafts 246 operatively but disconnectibly connected with bevel pinions 248 meshing with bevel pinions 250 on a shaft 252. The shaft 252 has a bevel gear 254 thereon meshing with a bevel gear 256 on the shaft 108 so as to be driven from this latter shaft.

Removable glue pots 258 are provided into which the glue applying rolls 244 dip, as illustrated in FIG. 25, and these are held in position by wing nuts 260. We find it advantageous to notch the carton end panel engaging surfaces of the glue applying rolls 244, as indicated at 262, and the usual doctor blades 264 are provided for operation in conjunction with the glue applying roll. The entire glue pot 258 with the glue roll 244 is removable for cleaning after removal of the wing nuts 260.

The top end panel tuckers 162 and 164 shown in FIGS. 4(1), 6 and 9 are also of the plow or twisted blade type, starting from horizontal positions shown in FIGS. 4(l) and twisting downwardly to vertical positions.

Heater plates 266 heated by electric heating elements 268 are provided as shown in FIGS. 4(m), 6, 7, 9, 10, 21, 22 and 23, which are hingedly mounted as shown at 270 in FIG. 22, so that they can be swung by handles 272 out of operating position under certain circumstances. A thermostatic switch 274 is provided for regulating the electric current to the heating elements 268, and the thermostat is controlled by conduction of heat through a copper tube 276 as shown in FIG. 23 from one of the heater plates 266.

We also provide chill blocks 278 shown in FIGS. 4(n), 7, 10 and 14, supplied with refrigerant from a refrigerating unit shown generally at 280 in FIG. 10.

Our machine, being constructed so that the frame member 38 is stationary relative to the frame tube 34 and the frame member 39 is adjustable relative thereto as illustrated in FIGS. 14 and 15, permits adjustment to different lengths of cartons C, the length thereof being indicated L in FIG. 2 and the width thereof W. For this purpose it will be noted that various operative connections between the shafts in FIGS. 14 and 25 are composed of sections that are telescopically but non-rotatably connected with each other. An adjusting shaft 282 is provided for this purpose equipped with an adjusting hand wheel 284 shown in FIG. 10 but we do not claim the adjusting mechanism. As already described, the holddown belts 190 can be vertically adjusted for the thickness of the carton being used in our machine, and certain other parts are likewise adjustable in conjunction therewith, but we do not deem it necessary to describe these in detail.

Referring to FIG. 18, it will be obvious that if the chain 84 is adjusted toward the right relative to the chain 82, the distance between the dogs 88 and 88a will be increased so as to take a wider carton C. This adjustment is accomplished by loosening the four bolts 81, shown in FIG. 14a, of the two inner sprockets 88 shown in FIG. 14, adjusting these sprockets relative to the outer sprockets 80 (the arcuate slots 83 of FIG. 14a permitting such adjustment) and re-tightening the bolts 81.

Practical operation After our machine has been adjusted to a desired size of carton, the magazine M is loaded with such cartons, and after a proper standby period for the heating elements 240 and 268 to attain their proper high operating temperature and similarly the chill blocks 278 to attain their proper low operating temperature, the machine may be started and will operate as follows, referring particularly to FIG. 4.

The vacuum cups 118 move upwardly from their lower most position shown in FIG. 8 until they contact the lowermost carton C resting on the projections 70, and since vacuum is applied to the cups soon after they leave their lowermost position, the cups grip the lower surface of the carton for the purpose of pulling it downwardly when the cups again move downwardly. In moving downwardly as to the position shown in FIG. 4(a), the

bottom panel 44 of this carton moves with the cups (first engaging a breaker rod 73 that facilitates the erecting operation) unhampered by the strippers 72 because of the notches 55 and 61 in the bottom end panels 54 and 60 respectively. The top end panels 62 and 64, however, engage the strippers 72 so that the strippers bow the top panel 50 upwardly as illustrated, thus erecting the front side panel 46 and the rear side panel 48 so that the carton can be guided into position between the dogs 88 A and 88a.

In the final lowered position of the carton as shown in FIG. 4( b), the carton is held in the bowed-open position by the springs 90 acting on the dogs 88 and 88a, and i in this position the carton may readily receive the product such as strips of bacon 57 shown in FIG. 4( placed manually therein from a position on the product shelf 150. However, before, the insertion it is desirable to tuck the dust tabs 52 and 53, and the bottom end panel 54, as shown in FIG. .4(c), (d) and (e) respectively. Movement of the chains 80 to the right in FIG. 4(b) moves the carton C in the upward direction (arrow A) in FIG. 4(0) so that the tucker 152 will first tuck the flap 52 because of the movement of the carton relative to the tucker, and then as in FIG. 4(d) the tucker 152 will move toward the rear of the machine (upwardly in this figure) faster than the speed of the carton to tuck the dust tab 53. Then as the carton moves still farther, the tucker 154 will tuck the panel 54 to the vertical position shown in FIG. 4(e) to serve as a stop for the product 57 when inserted as in FIG. 4(i). At this time the carton C is opposite the stop plate 155 and the panel 54 thus supported adequately to take the shock of the incoming product 57.

The next step in the operation is the movement of the carton forwardly (upwardly in FIG. 4(g)) past the tucker 156 which tucks the dust tab 56, and then as in FIG. 4(h) the tucker 156 moves upwardly at a greater speed than the movement of the carton to tuck the dust tab 58. Next, in FIG. 4(i) the tucker 160 plows the panel 60 upwardly to the vertical position. It will be noted that the top panel 50 is still in the bowed-up position. At this time, however, it starts to come under the hold-down belts and rollers232 which flatten the top panel 50 to' the positionshown in FIG. 4(i), the springs 90 behind the dogs 88 and 88a permitting them to spread apart and the panels 46 and 48 to assume vertical positions so that in cross section lengthwise of the machine the carton is of rectangular shape when it reaches the FIG. 4( position.

At this position the de-waxer plates 23-8 remove some of the wax from the panels 54, 60, 62 and 64, and so heat the remaining wax that the panels absorb it to permit the glue applied in FIG. 4(k) from the glue-applying rollers 244 to hold firmly after it sets.

The tuckers 162 and 164 then tuck the flaps 62 and 64 as shown in FIG. 4(l) as the carton of product. progresses through the machine, after which the carton reaches the heater plates 266 as shown in FIG. 4 (m).

stack of cartons in such manner that the lowermost one may be withdrawn downwardly from the stack, vacuum cups for engaging the lowermost carton, removing it from said magazine, partly erecting it and preliminarily bowing the top panel thereof, tuckers for dust tabs and an end panel at one end of the carton, means for retaining said dust tabs and said endpanel tucked to serve as a stop for product inserted into the carton from the other end thereof, a tucker for two dust tabs and an end panel at the other end of the carton, dewaxers pastwhich the carton passes to remove wax from the ends of the carton and the top end panels thereof to permit the application of glue thereto, tucking means for said top end panels to tuck them against the ends of the carton, means to heat said ends to set the glue means to cool said ends to insure that the glue remains set, and means for discharging the carton from said machine.

5. In a cartoning machine, a magazine for a stack of collapsed cartons, the carton bodies being operated upon being of rectangular configuration and horizontally disposed with panels of the carton bodies constituting the side, top and bottom panels thereof, and having dust tabs and end panels connected therewith, a conveyor for receiving cartons from said magazine, said conveyor having carton-receiving dogs to engage the side panels of the carton and bow the top panel of the carton upwardly, tuckers for dust tabs and an end panel at one end of the carton, means for retaining said dust tabs and said end panel tucked to serve as a stop for product inserted into the carton from the other end thereof, a tucker for two dust tabs and an end panel at the other end of the carton, tucking means for said top end panels to tuck them against the ends of the carton, means to heat said ends to set the glue, means to cool said ends to insure that the glue remains set, and means for discharging the carton from said machine.

6. A cartoning machine comprising a magazine for a stack of collapsed cartons, the carton bodies being operated upon being of rectangular configuration and horizontally disposed with panels of the carton bodies constituting the side, top and bottom panels thereof, and having dust tabs and end panels connected therewith, a conveyor for receiving cartons from said magazine, said conveyor having carton-receiving dogs to engage the side panels of the carton and bow the top panel thereof upwardly,

said magazine having projections for supporting said stack of cartons in such manner that the lowermost one may be withdrawn downwardly from the stack, vacuum cups for engaging the lowermost carton, removing it from the magazine, partly erecting it and preliminarily bowing the top panel thereof, said magazine having a breaker rod to start the erection of the carton as it is withdrawn past said breaker rod, tuckers for dust tabs and the bottom end panel at one end of the carton, means for retaining said dust tabs and said end panel tucked to serve as a stop for the product inserted into the carton from the other end thereof, a tucker for dust tabs andvthe bottom end panel at the other end of the carton, dewaxers past which carton passes comprising heating plates and heaters therefor to remove part of the wax from the ends of the carton and the top end panels thereof to permit the application of glue thereto, holddown means for removing the bow from the top panel of the carton, tucking means for said top end panels to tuck them against the ends of the carton, means to heat said ends to set the glue, means to cool said ends to insure ,that the glue remains set, and means for discharging the sealed carton from the machine.

7. A cartoning machine comprising a magazine for a stack of collapsed cartons, the carton bodies being operated upon being of rectangular configuration and horizontally disposed with panels of the carton bodies constituting the side, top and bottom panels thereof, and having dust tabs and end panels connected therewith, a conveyor for receiving cartons from said magazine, said conveyor having carton-receiving dogs to engage the side for to remove part of the wax from the ends of the carton and the top end panelsthereof to permit the application of glue thereto, holddown means for removing the bow from the top panel of the carton, tucking means for said top end panels to tuck them against the ends of the carton, means to heat said ends to set the glue, means to cool said ends to insure that the glue remains set, and means for discharging the sealedcarton from the machine.

8. A cartoning machine comprising a magazine for a stack of collapsed cartons, the carton bodies being operated upon being of rectangular configuration and horizontally disposed with panels of the carton bodies constituting the side, top and bottom panels thereof, and having dust tabs and end panels connected therewith, a conveyor for receiving cartons from said magazine, said conveyor having carton-receiving dogs to engage the side panels of the carton and bow the top panel thereof upwardly, said magazine having projections for supporting said stack of cartons in such manner that the lowermost one may be withdrawn downwardly from the stack, vacuum cups for engaging the lowermost carton, removing it from the magazine, partly erecting it and preliminarily.

bowing the top panel thereof, said magazine having a breaker rod to start the erection of the carton as it is withdrawn past said breaker rod, tuckers for dust tabs and the bottom end panel at one end of the carton, means for retaining said dust tabs and said end panel tucked to serve as a stop for the product inserted into thecarton from the other end thereof, a tucker for dust tabs and the bottom end panel at the other end of the carton, tucking means for said top end panels to tuck. them against the ends of the carton, means to heat said ends to set the glue," means to cool said ends to insure that the glue remains set, and means for discharging the sealed carton fromthe machine. v

9. In a cartoning machine of the character disclosed, a magazine for a stack of collapsed cartons, the carton bodies being operated upon being of rectangular configuration and horizontally disposed with panels of the carton bodies constituting the side, top and bottom panels thereof, and having dust tabs and end panels connected therewith, a conveyor for receiving cartons from said magazine, said conveyor having dogs to engage the side panels of the carton and bow the top panel of the carton upwardly, said magazine having projections for supporting said stack of cartons in such manner that the lowermost one may be withdrawn downwardly from the stack, means for withdrawing the lowermost carton from said magazine and depositing it on said conveyor, tuckers for dust tabs and an end panel at one end of the carton, means for retaining said dust tabs and end panel tucked to serve as a stop for product inserted into the other end of the carton, a tucker for other dust tabs and the other end panel at the other end of the carton, dewaxers past which the carton passes comprising heating plates and heaters therefor to remove part of the wax from the ends of the carton and the top end panels thereof to permit the application of glue thereto, holddown means for removing the bow from'the top panel of the carton and contacting the top endpanels thereof with said dewaxing means, gluing means for said top; end panels, tucking means for said top end panels to tuck them against the ends of the carton, means to heat said ends to set the glue, means to cool said ends to insure that the glue remains set, and means for thereafter discharging the carton from the machine.

11 a magazine for a stack of collapsed cartons, the carton bodies being operated upon being; of rectangular configuration and horizontally disposed with panels of the carton bodies constituting the side, top and bottom panels thereofi and having dust tabs and end panels connected therewith, a conveyor for receiving cartons from said magazine, said conveyor having dogs to engage the side panels of the carton and how the top panel of the carton upwardly, said magazine having projections for supporting said stack of cartons in such manner that the lowermost one may be withdrawn downwardly from the stack, means for withdrawing the lowermost carton from said magazine and'depositin'g on said conveyor, tuckers for dust tabs and an 'en'd panel at one end of the carton,

means for retaining said dust tabs and end panel tucked to serve as a stop for product inserted into the other end of the carton, a tucker for other dust tabs and another end panel at the other end of the carton, holddown means for removing the bow from the top panel of the carton, gluing means for two of said end panels, tucking means for said two end panels to tuck them against the ends of the carton, means to heat sm'd ends to set the glue, means to cool said ends to insure that the glue remains set, and means for thereafter discharging the carton from the machine.

11. In a cartoning machine of the character disclosed, a. magazine for a stack of collapsed cartons, the carton bodies being operated upon being of rectangular configuration and horizontally disposed with panels of the carton bodies constituting the side, top and bottom panels thereof, and having dust tabs and end panels connected therewith, a conveyor for receiving cartons from said magazine, carton-receiving dogs carried by said conveyor and biased to engage the side panels of the carton to hold it in an open position and how the top panel thereof upwardly, said conveyor conveying the carton from the infeed end to the discharge end of said machine, means for removing the lowermost carton from said magazine and depositing it on said conveyor and between said carton-receiving clogs, tuckers for two dust tabs and one end panel of the carton, means for retaining said dust tabs and end panel tucked to serve as a stop for product inserted into the other end of the carton, tucker-s for the other two dust tabs and the other end panel of the carton, dewaxers past which the carton passescornprising heater plates and heaters therefor to remove part of the wax from the ends of the carton and the top end panel thereof to permit the application of glue thereto, holddown means for removing the bowl from the top panel of the carton and contacting the end panels thereof with said dewaxing means, gluing means for two of said end panels, tucking means for said two end panels to tuck them against the ends of the package, means to heat said ends to set the glue, and means to cool said ends to insure that the glue remains set.

12. In a cartoning machine, a magazine for astack of collapsed cartons, the carton bodies being operated upon being of rectangular configuration and horizontally disposed with the panels of the carton bodies constituting the side, top and bottom panels thereof, and having end panels connected therewith, a conveyor having pairs of pivoted dogs for receiving a carton from said magazine and holding the carton in an open position, said dogsengaging the front and rear panels of the carton and being pivotally movable toward each other to inclined positions for bowing the top panel of the carton upwardly, said conveyor conveying the carton from the infeed end to the discharge end of said machine, means for removing the lowermost carton from said magazine and depositing it in a pair of dogs on said conveyor, means to tuck certain panels at one end of the carton to act as a stop for product introduced into the carton from the other open end thereof, means to thereafter tuck other panels at the open end of the carton, means to apply glue thereto, tucking means for the remaining panels to tuck them 12 against the ends of the carton, means to heat said ends to set the glue, and means to cool said ends to insure that the glue remains set.

13. In a canoning machine of the character disclosed, a magazine for a stack of collapsed cartons, the carton bodies being operated upon being of rectangular oonfiguration and horizontally disposed with panels of the carton bodies constituting the side, top and bottom panels thereof, and having dust tabs and end panels connected therewith, a conveyor for receiving cartons from said magazine, said conveyor, being provided with dogs to engage the side panels of the carton and how the top panel of the carton upwardly, said magazine having projections for supporting the stack of cartons in such manner that'th'e lowermost one may be withdrawn downward ly from the stack, means for removing the lowermost carton from said magazine and depositing it on said con-' veyor, tuckers for two dust tabs and one end panel of the carton, means for retaining said dust tabs and end panel tucked to serve as a stop for product inserted into the carton, and means for tucking the rest of the end panels of said carton into closed position and for sealing them in such position, said last means including heating means for setting the glue, and chilling means for insuring that the glue remains set.

14. A cartoning machine comprising a magazine for collapsed cartons, the carton bodies being operated upon being of rectangular configuration and horizontally disposed with panels of the carton bodies constituting the side, top and bottom panels thereof, and having dust tabs and end panels connected therewith, a conveyor for receiving cartons from said magazine, said conveyor having carton-receiving pockets provided with dogs to engage the side panels of the carton and bow the top panel of the carton upwardly, said magazine having means for supporting said stack of cartons in such manner that the lowermost one may be withdrawn downwardly from the stack, means for withdrawing the lowermost carton from said magazine and depositing it in a pocket of said conveyor, tuckers for two dust tabs and a bottom end panel of the carton, means for retaining said dust tabs and said 7 bottom end panel tucked to serve as a stop for product inserted into the carton, and means for tucking the rest of the dusttabs and end panels of said carton into closed position and for sea-ling them in such position, said last means including gluing means and heating means for setting the glue.

15. In a cartoning machine of the character disclosed, a magazine for a stack of collapsed cartons, the carton bodies being operated upon being of rectangular configuration and horizontally disposed with the panels of the carton bodies constituting two panels and two sides thereof, and having dust tabs and end panels connected therewith, a conveyor for receiving cartons, one at a time, from said magazine with one panel of the carton flat against said conveyor, means carried by said conveyor to engage the sides of the carton and move them toward each other to acute angular relationship with said one panel of the carton whereby the other panel thereofwill be bowed outwardly, tuckers for two dust tabs and a bottom end panel of the carton to serve as a stop for product inserted into the other end of the carton, means for tucking therest of the dust tabs and end panels of 'said carton into closed position and for sealing them in assent means for receiving cartons from said magazine, holding the carton in open position and conveying it from the infeed end to the discharge end of said machine, said means comprising elements engageable with the sides of the carton to bend them toward each other whereby one panel of the carton is bowed away from said conveyor, means for removing the bottommost carton from said magazine and depositing it on said conveyor, tuckers for dust tabs and an end panel at one end of the carton to serve as a stop for product inserted into the other end of the carton, and means for tucking the rest of the dust tabs and end panels of the carton into closed position and for sealing them in such position.

17. In a cat-toning machine of the character disclosed, a magazine for a stack of collapsed cartons, the carton bodies being operated upon being of rectangular configuration and horizontally disposed with the panels of the catron bodies constituting the side, top and bottom panels thereof, a conveyor for receiving cartons from said magazine, said conveyor having carton-receiving dogs to en gage the side panels of the carton and bow the top panel of the carton upwardly, said magazine having projections for supporting said stack of cartons in such manner that the lowermost one may be withdrawn downwardly from the stack, vacuum cups for engaging the lowermost carton, withdrawing it from the magazine, partly erecting it and preliminarily bowing the top panel thereof, strippers for engaging said top panel to elTect such bowing, a breaker element to engage the carton and start the erection thereof as it is withdrawn past said breaker element, and means for closing and sealing said carton after product has been inserted therein while the carton is held in bowed-open position by said carton-receiving dogs of said conveyor.

18. In a cartoning machine of the character disclosed, a magazine for a stack of collapsed cartons, the carton bodies being operated upon being of rectangular configuration and horizontally disposed with the panels of the carton bodies constituting the side, top and bottom panels thereof, a conveyor for receiving cartons from said magazine, said conveyor having carton-receiving dogs to engage the side panels of the carton and how the top panel of the carton upwardly, said magazine having projections for supporting said stack of cartons in such manner that the lowermost one may be withdrawing downwardly from the stack, means for engaging the lowermost carton, withdrawing it from the magazine, partly erecting it and preliminarily bowing the top panel thereof, strippers for engaging said top panel during the withdrawing action to eifect such bowing, and means for closing and sealing said carton after the insertion of product therein while the carton is held in bowed-open position by said carton-receiving dogs of said conveyor.

19. In a cartoning machine, a magazine for a stack of collapsed cartons, the carton bodies being operated upon being of rectangular configuration and horizontally disposed with the panels of the carton bodies constituting the side, top and bottom panels thereof, a conveyor for receiving cartons from said magazine, said magazine having projections for supporting said stack of cartons in such manner that the lowermost one may be withdrawn downwardly from the stack, said magazine having strippers for engaging the top panel only of the carton as it is withdrawn from said magazine to efiect a bowing upwardly of said top panel to open the carton before depositing it on said conveyor, said conveyor having means to hold the carton bowed open, and means for closing and sealing said carton after product is inserted therein while the carton is held in bowed-open position by said conveyor means.

20. In a cartoning machine of the chararcter disclosed, a magazine for a stack of collapsed cartons, the carton bodies being operated upon being of rectangular configuration and horizontally disposed with the panels of the carton bodies constituting the front, rear, top and bottom panels thereof, and having end panels connected therewith, a conveyor having pairs of dogs for receiving cartons from said magazine and holding the carton in an open position, said conveyor conveying said carton from the infeed end to the discharge end of said machine, said dogs being pivoted to said conveyor, and each comprising a body portion of horizontally disposed V-shaped configuration with the ends thereof horizontally inclined away from an adjacent carton to bend the front and rear panels thereof toward each other and thereby the top panel thereof upwardly, stop means for limiting the pivotal movement of said dogs, means for removing the lowermost carton from said magazine and depositing it in a pair of dogs on said conveyor, means to tuck certain panels at one end of the carton to partially close that end for the reception of product into the other end thereof, and means for tucking the rest of the end panels of said carton into closed position and for sealing them in such position, said last means including gluing means, heating means for setting the glue, and chilling means for insuring that the glue remains set before the completed package with the product therein is discharged in sealed condition from the machine.

21. In a cartoning machine of the character disclosed, a magazine for a stack of collapsed cartons, the carton bodies being operated upon being of rectangular configmation and horizontally disposed with the panels of the carton bodies constituting the side, top and bottom panels thereof, a conveyor for receiving cartons from said magazine, said conveyor having carton-receiving dogs to engage the side panels of the carton and bow the top panel of the carton upwardly, said magazine having projections for supporting said stack of cartons in such manner that the lowermost one may be withdrawn downwardly from the stack, vacuum cups for engaging the lowermost carton, withdrawing it from the magazine, partly erecting it and deposiing it between said dogs, a breaker element to engage the carton and start the erection thereof as it is withdrawn past said breaker element, and means for closing and sealing said carton after product has been inserted therein while the carton is held in bowed-open position by said carton-receiving dogs of said conveyor.

References Cited in the file of this patent UNITED STATES PATENTS 

